US4154318A - Retractable suspended scaffolding on a self-propelled truck, particularly adapted for maintenance work on road-bridges and the like - Google Patents

Retractable suspended scaffolding on a self-propelled truck, particularly adapted for maintenance work on road-bridges and the like Download PDF

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Publication number
US4154318A
US4154318A US05/849,673 US84967377A US4154318A US 4154318 A US4154318 A US 4154318A US 84967377 A US84967377 A US 84967377A US 4154318 A US4154318 A US 4154318A
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US
United States
Prior art keywords
support
truck
gangway
fact
suspended scaffolding
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Expired - Lifetime
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US05/849,673
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English (en)
Inventor
Antonio Malleone
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Autostrade Concessioni e Costruzioni Autostrade SpA
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Autostrade Concessioni e Costruzioni Autostrade SpA
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
    • E01D19/106—Movable inspection or maintenance platforms, e.g. travelling scaffolding or vehicles specially designed to provide access to the undersides of bridges
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms

Definitions

  • travelling platforms mounted upon motor vehicles, which allow a quick and safe access under the structures of bridges, viaducts and the like, by means of a gangway supported by articulated arms oleodynamically controlled.
  • Said travelling platforms have now achieved a remarkably high grade of perfection and automatism, but, because of their high cost, their use is advantageous only to perform periodical inspections and controls, taking into account their travelling and autonomy features, as well as the speed and simplicity of their installation.
  • the present invention concerns a retractable suspended scaffolding, mounted upon a self-propelled truck, particularly adapted for maintenance work on structures situated along the roads at areas of difficult access, the scaffolding being substantially composed of an operating gangway arranged to be positioned below the planking of a bridge, a viaduct or the like, by means of a set of mechanisms operated by oleodynamic jacks, hydraulic motors and manually controlled reduction units.
  • Such a scaffolding forms movable equipment easy to employ, has low costs of installation and operation in comparison with those of the heretofore known systems and satisfies every operating requirement in connection with the maintenance service of bridges.
  • FIG. 1 schematically shows, in a plan view from above, partially sectioned, the scheme of a retractable suspended scaffolding, according to the invention, represented in a position in which the set gangway-sliding arm is hoisted from the self-propelled truck and is horizontally carried outside the bridge structure.
  • FIG. 2 is an enlarged portion of the structure shown in FIG. 1.
  • FIG. 3 shows, in a transverse elevational view partially sectioned along the line A--A of FIG. 1, the structure FIG. 1 represented in the closed position, i.e. with the set gangway-sliding arm retracted and arranged on board of the truck.
  • FIG. 4 is an enlarged portion of the structure shown in FIG. 3.
  • FIG. 5 shows, in a plan view from above, partially sectioned, the structure of FIG. 1 represented in a position in which the set gangway-sliding arm is vertically rotated.
  • FIG. 6 shows, in a transverse elevational view partially sectioned along the line A--A of FIG. 1, the structure of FIG. 1 represented in a position in which the sliding arm is vertically arranged and the telescopic gangway is turned over horizontally at a 90° angle, outside the bridge structure.
  • FIG. 7 is an elevational view illustrating a portion of the view of FIG. 6 on an enlarged scale.
  • FIG. 8 is an elevational view that shows, in a view partially sectioned along the line A--A of FIG. 1, the structure of FIG. 1 represented in an in-use position below the bridge structure.
  • the retractable suspended scaffolding substantially consists of a truck or carriage 1, of a kind similar to that of a conventional flat-bed trailer, which can be towed by a tractor and which belongs to the class of vehicles which are not subjected to the issue of special circulation permits, both with respect to the size and to the weight.
  • the direction drawbar 2 of the truck 1 is provided in such way that on its right side, i.e. at the side looking on the shoulder of the road, a stiff triangle 3 can be mounted, this triangle being connectable, for instance, by means of bolts or spikes 4 passing through corresponding holes of the drawbar 2 and the triangle 3.
  • said triangle 3 is provided with a sliding element 5, for instance a shoe, a roller or the like, which allows the drawbar 2 to be coupled to a guide 6 consisting, for instance, of an H-beam fixed at a predetermined height to the pillarings P of the guardrail, without projecting outwardly of the guardrail itself.
  • a sliding element 5 for instance a shoe, a roller or the like
  • Said guide 6 may be fixed firmly at the structures, or else it may be provisionally mounted when starting the maintenance work.
  • the triangle 3 is dimensioned in such way that the drawbar 2 is maintained at a 90° angle with respect to the guide 6 when the sliding element 5 is coupled to the guide itself.
  • a similar device can be mounted backwards under the truck 1, particularly when also the rear axle is steering.
  • an articulated parallelogram is mounted, which is composed of the pairs of arms 7 and 8, oscillating on one hand on the axles 9 and 10, respectively, supported by the ears of the base 11 integral with the flat-bed of the truck 1 and, on the other hand, kinematically coupled to a stiff connection and support member 12.
  • Said parallelogram is operated by means of a jack 13 constrained on the axle 9, the same on which also the pair of arms 7 can oscillate, and acting the axle 14 supported by the ears 15 of the pair of arms 8.
  • the member 12 which closes the articulated parallelogram is integral, forwards, with a sturdy center plate 16 adapted to support, ensuring its rotation in the vertical plane, a hollow support 17, within which an arm 18 is slidable, this arm having a square cross-section and being guided through said support 17 by means of cheeks with sliding shoes, lined with antifriction material, not represented in the figures.
  • the rotation of the support 17 in the vertical plane is controlled by means of a geared motor 19, arranged between the wings of the member 12.
  • the support 17 Inwardly the support 17, in turn, is arranged to rotate about its own geometrical longitudinal axis, causing the rotation of the arm 18 too.
  • the arm 18 and the support 17 can be locked together, at least in a position of the inner part of the support 17 which can rotate in respect to the outer part, by means of a pin 61 passing through any of the pair of holes 62 provided on the facing faces of the arm 18 and a pair of holes, diametrically opposed, provided on the outer part of the support 17. Said rotation is assured, as can be seen in the annexed drawings, by means of the two center plates 20 and the gear wheel 21 coupled to the pinion gear 22 which is operated by the motor 23.
  • a second hydraulic jack 24 is provided, which is supported by means of brackets 25 integral with the gear wheel 21, whose rod 26 acts downwardly along a vertical path, causing the sliding motion of a two-winged shoe 27 along the outer face of the arm 18, said shoe 27 being connected to the rod 26 of the jack 24 by means of the pin 28.
  • the respective face of the sliding arm 18 is provided with ears 29, arranged to be connected to the shoes 27 through the pin 30.
  • the height of the ears 29 is such that the ears themselves can pass through the hollow support 17 in the space between the two cheeks (not represented) which guide the sliding arm 18.
  • the abovementioned arm 18 shows in its lower part a telescopic extension 31, connected on and locked to it by means of a pin 32 passing through corresponding holes of the elements themselves, respectively 18 and 31, said extension 31 being in turn integral, at its lower end, with a header 33 which is coupled through pins 34 to a bracket-shaped support 35, provided for supporting two telescopic elements, respectively 36 and 37, with their floor and their railings, which form the operating gangway according to the invention.
  • the coupling of the supporting-bracket 35 to the header 33 by means of the pins 34, one for each side, is such to allow a rotation angle of 90° at least of the support 35 with respect to the header 33, which is made integral with the extension 31 of the sliding arm 18 by means of a pin 38 passing through corresponding holes of the two elements, respectively 31 and 33. There is no reason, however not, to a make the header 33 integral with the element 31 by means of a welding.
  • the support 35 of the gangway 36-37 presents on the two side frames two holes, respectively 39 and 40, which are equidistant from the axis of the pins 34 and are 90° apart from each other, so that when said support 35 is made to rotate by 90° in one direction or the opposite, one of the two holes 39 or 40 coincides with a corresponding hole which is provide on the header 33 along the same horizontal alignment but at the opposite end with respect to the hole within which the pin 34 is inserted.
  • a length of steel cable 42 of a suitable strength is used provided at the ends with sturdy terminals adapted to be connected on one side to the stem 26 of the jack 24 by means of the pin 28 and on the other side to a suitable bar 43 introduced and fixed betweeen the two holes 63 of the support 35 when said operations have to be done.
  • connection of the cable 42 with the support 35 can be completed or replaced by other devices of a known kind.
  • the line of action of the cable itself is discharged sideways through the shoe 27 and a rolling member 44 provided on the header 33, for instance a roller fixed in a rotatable way between the ears 45 which are provided for the hoisting of the unit.
  • the face of the elements 18 and 31 opposed to that on which the shoe 27 slides, is provided with parallel rectilinear guides 46 in which slide the shoes 47 of a service elevator-basket 48 controlled by a hydraulic windlass 49.
  • the station of the basket 48 corresponds with the walking plane of floor of the telescopic member 36, i.e. of the internal telescopic member.
  • the operator of the retractable suspended scaffolding according to the invention is in condition to reach easly and safely the manual controls 51 and 52, for instance handwheelcranks which operate reduction units controlling the steel rope and transmission systems for the sliding of the telescopic members, respectively 36 and 37, within the supporting-bracket 35 and for the forward motion of the inner member 36 with respect to the external member 37, until the maximum total length has been reached.
  • the manual controls 51 and 52 for instance handwheelcranks which operate reduction units controlling the steel rope and transmission systems for the sliding of the telescopic members, respectively 36 and 37, within the supporting-bracket 35 and for the forward motion of the inner member 36 with respect to the external member 37, until the maximum total length has been reached.
  • All the elements which comprise the retractable suspended scaffolding are dimensioned in such a way to allow that at the end of the gangway 36, when this is in the maximum extension position, a live load may be placed which is certainly advantageous in connection with the economy of the work to be done.
  • a supplemental stabilising wheel 53 is advantageously placed on the right side of the truck 1, in correspondence with the right wheel of each axle.
  • Said wheel 53 for instance, may be applied by coupling its rim and that of the corresponding wheel by means of suitable bolts and/or dap joints.
  • a longitudinal container for ballasting materials, in such a way to compensate the moment which could cause the overturning of the scaffolding-truck unit.
  • supports 55 are provided on the right side of the truck 1, these supports being lined with a layer 56 of an adequately plastic material, for instance a block of hard rubber, on which they rest suitable heels 57 obtained along the profile of the arms 8.
  • Similar blocks 58 of an adequately plastic material are provided at the container 54, on which the arms 8 will rest in their rest and travel positions.
  • Said equipements may be remotely controlled by means of two push-button panels, one of which will be on the suspended gangway and the other at ground level.
  • the truck 1 is equipped in such way that it can effect displacements in the two directions parallel to the road shoulder.
  • These displacements are obtained by means of a geared motor unit 60 applied, for instance, to the twin wheel of the fixed rear axle of the truck, this unit 60 being controllable both from ground position and from the gangway, by means of the abovementioned push-button panels.
  • the retractable suspended scaffolding according to the invention is therefore suitable, as will be understood from the following, for:
  • the stiff triangle 3 will be mounted on the drawbar 2 by means of the bolts 4 and the sliding element 5 will be inserted into the guide 6, which has been previously fixed on the pillarings P of the guardrail.
  • the supplemental wheel 53 will be applied to the corresponding wheels of the the truck 1 on the right side of the truck itself, that is on the side adjacent the road shoulder.
  • the shoe 27 has to be unlocked from the already utilized ear 29, the rod 26 has to be lifted causing the raising of the shoe 27 which will be connected to a new ear 29 situated at a higher level than the previous one, the pin 61 has to be removed and the jack 24 will be operated again in the opening direction. The operation has to be repeated until the desired depth has been reached, this position being assured by the final locking of the arm 18 to the support 17 inserting the pin 61 again.
  • the jack 24 is operated in the opening direction until the support 35 and the gangway 36-37 will be brought gradually into their final position, 90° apart from the sliding arm 18, that is into a horizontal position.
  • the members 36 and 37 are made to slide through the support 35 for their whole length and by means of the second reduction unit operated by the manual control 51, the inner element 36 of the gangway is extracted, until the maximum total length is reached.
  • the gangway, or scaffolding, according to the invention is in its working position, ready to be utilized.
  • the gangway may be advantageously utilized also keeping it parallel to the structure, for instance the lateral side of a bridge, of a viaduct or the like.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
US05/849,673 1976-11-09 1977-11-08 Retractable suspended scaffolding on a self-propelled truck, particularly adapted for maintenance work on road-bridges and the like Expired - Lifetime US4154318A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT52090/76A IT1123032B (it) 1976-11-09 1976-11-09 Ponteggio sospeso retrattile su carrello semovente particolarmente atto per interventi di manutenzione sui ponti stradali e simili
IT52090A/76 1976-11-09

Publications (1)

Publication Number Publication Date
US4154318A true US4154318A (en) 1979-05-15

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US05/849,673 Expired - Lifetime US4154318A (en) 1976-11-09 1977-11-08 Retractable suspended scaffolding on a self-propelled truck, particularly adapted for maintenance work on road-bridges and the like

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US (1) US4154318A (it)
AT (1) AT370182B (it)
CH (1) CH617640A5 (it)
DE (2) DE2749470C3 (it)
ES (1) ES464011A1 (it)
FR (1) FR2370148A1 (it)
IT (1) IT1123032B (it)
YU (1) YU39558B (it)

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4418791A (en) * 1980-03-27 1983-12-06 Frey Wigger Paul Device for enhancing the versatility of cranes or the like
US4556124A (en) * 1982-11-26 1985-12-03 Sergio Lotto Machine made of a set of equipment for the inspection and the maintenance of the lower surfaces of road and railway bridges, as well as viaducts and their respective piers
US4630708A (en) * 1986-01-29 1986-12-23 Thompson George J Semi-adjustable service platform apparatus for gantry crane
US4633975A (en) * 1984-03-19 1987-01-06 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Under-bridge access assembly
US4690247A (en) * 1985-03-14 1987-09-01 Nippon Light Metal Co., Ltd. Inspection car for bridge construction of a high level road
US5152370A (en) * 1991-01-14 1992-10-06 Silberman Cyril J Bridge docking structure for aircraft
US5253731A (en) * 1989-09-08 1993-10-19 Alfons Moog Bridge underview device
US5318149A (en) * 1989-03-25 1994-06-07 Alfons Moog Apparatus for inspecting the underside of bridges
US5375283A (en) * 1991-01-14 1994-12-27 Silberman; Cyril J. Bridge docking structure for aircraft
US5435410A (en) * 1993-07-21 1995-07-25 Langston; Ralph C. Bridge sidewalk vehicle
EP1172483A2 (en) 2000-07-13 2002-01-16 Hydra Platforms Mfg. Inc. Under bridge access apparatus with cross-linking member connecting tower with vehicular chassis
US6507163B1 (en) * 1993-12-20 2003-01-14 Mark A. Allen Robotic bridge maintenance system
US20030203802A1 (en) * 1999-09-03 2003-10-30 Baxter International Inc. Blood separation chamber with preformed blood flow passages and centralized connection to external tubing
US20070166144A1 (en) * 2003-12-05 2007-07-19 Charlie Hall Pipe-handling boom and method of use thereof
US20090144916A1 (en) * 2007-12-09 2009-06-11 Saferack, Llc A gangway and method for manufacturing same
US20100031455A1 (en) * 2008-08-10 2010-02-11 Honeycutt Robert W Fall Restraint Equipment Component and Method for Manufacturing the Same
US20130313044A1 (en) * 2012-05-25 2013-11-28 J. Aubrey Stewart Extension boom apparatus
US20160177584A1 (en) * 2013-08-06 2016-06-23 Fast Beam Oy Scaffold
US20160214842A1 (en) * 2015-01-23 2016-07-28 Jeremy Herauf Unique roadworthy sidewalk boom trailer, having on-site interchangeable boom, on-site interchangeable ladder, and on-site interchangeable catwalk sized to access narrow openings and nooks over and under bridges
US9556625B2 (en) 2011-03-08 2017-01-31 Jerzy Meldner Suspended scaffolding system
JP2017115569A (ja) * 2015-12-17 2017-06-29 西尾レントオール株式会社 橋梁用吊足場及び橋梁用吊足場の設置方法
US20170226756A1 (en) * 2014-08-06 2017-08-10 Fast Beam Oy Scaffold for supporting a working platform for bridges
JP2018062807A (ja) * 2016-10-13 2018-04-19 株式会社高知丸高 高架構造物点検装置、高架構造物点検装置の設置方法及び高架構造物点検方法。
CN108163781A (zh) * 2017-11-24 2018-06-15 湖北华舟重工应急装备股份有限公司 一种车载式快速安装救援电梯
JP2018155060A (ja) * 2017-03-21 2018-10-04 米山工業株式会社 移動足場装置
JP2018155061A (ja) * 2017-03-21 2018-10-04 米山工業株式会社 移動足場装置
US10287150B1 (en) * 2018-01-06 2019-05-14 Ford Miller Holding Company, LLC Mobile platform carrying system
CN111775851A (zh) * 2020-07-03 2020-10-16 山东交通学院 桥梁、隧道智能检测车机械臂系统
US11591802B1 (en) 2020-02-28 2023-02-28 Material Control, Inc. Modular access system
US11603302B2 (en) * 2017-07-12 2023-03-14 Nihon Bisoh Co., Ltd. Work gondola apparatus and work vehicle provided with same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2626865B1 (fr) * 1988-02-04 1990-04-20 Couturier Sa Fils Marcel Nacelle pour fleche telescopique d'engin de levage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3608669A (en) * 1969-12-02 1971-09-28 Bridge Painting Inc Bridge-painting apparatus and method
US3774719A (en) * 1972-05-17 1973-11-27 Bridge Painting Inc Articulated apparatus and scaffold therefor
US4044858A (en) * 1974-11-22 1977-08-30 Sverre Munck A/S Maintenance device for use underneath deck structures
US4074790A (en) * 1976-02-27 1978-02-21 Daciano Colbachini Vehicle-borne inspection and maintenance apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1216914B (de) * 1962-07-13 1966-05-18 Hilgers A G Brueckenbesichtigungsgeraet
US3262517A (en) * 1964-11-18 1966-07-26 Jerry P Malec Bridge crane
DE2054646A1 (de) * 1969-11-12 1971-08-26 Colbacchini, Attiho D , Chiarotto, Romeo, Dr , Lotto, Sergio, Dr Ing , Saggin, Francesco, Dr Ing , Padova (Italien) Bruckenbesichtigungseinnchtung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3608669A (en) * 1969-12-02 1971-09-28 Bridge Painting Inc Bridge-painting apparatus and method
US3774719A (en) * 1972-05-17 1973-11-27 Bridge Painting Inc Articulated apparatus and scaffold therefor
US4044858A (en) * 1974-11-22 1977-08-30 Sverre Munck A/S Maintenance device for use underneath deck structures
US4074790A (en) * 1976-02-27 1978-02-21 Daciano Colbachini Vehicle-borne inspection and maintenance apparatus

Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4418791A (en) * 1980-03-27 1983-12-06 Frey Wigger Paul Device for enhancing the versatility of cranes or the like
US4556124A (en) * 1982-11-26 1985-12-03 Sergio Lotto Machine made of a set of equipment for the inspection and the maintenance of the lower surfaces of road and railway bridges, as well as viaducts and their respective piers
US4633975A (en) * 1984-03-19 1987-01-06 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Under-bridge access assembly
US4690247A (en) * 1985-03-14 1987-09-01 Nippon Light Metal Co., Ltd. Inspection car for bridge construction of a high level road
US4630708A (en) * 1986-01-29 1986-12-23 Thompson George J Semi-adjustable service platform apparatus for gantry crane
AU579955B2 (en) * 1986-01-29 1988-12-15 Paceco Corp Semi-adjustable service platform apparatus for gantry crane
US5318149A (en) * 1989-03-25 1994-06-07 Alfons Moog Apparatus for inspecting the underside of bridges
US5253731A (en) * 1989-09-08 1993-10-19 Alfons Moog Bridge underview device
US5152370A (en) * 1991-01-14 1992-10-06 Silberman Cyril J Bridge docking structure for aircraft
US5375283A (en) * 1991-01-14 1994-12-27 Silberman; Cyril J. Bridge docking structure for aircraft
US5381575A (en) * 1991-01-14 1995-01-17 Silberman; Cyril J. Bridge docking structure for aircraft
US5435410A (en) * 1993-07-21 1995-07-25 Langston; Ralph C. Bridge sidewalk vehicle
US6507163B1 (en) * 1993-12-20 2003-01-14 Mark A. Allen Robotic bridge maintenance system
US20030203802A1 (en) * 1999-09-03 2003-10-30 Baxter International Inc. Blood separation chamber with preformed blood flow passages and centralized connection to external tubing
EP1172483A2 (en) 2000-07-13 2002-01-16 Hydra Platforms Mfg. Inc. Under bridge access apparatus with cross-linking member connecting tower with vehicular chassis
US6598702B1 (en) 2000-07-13 2003-07-29 Mcgillewie, Jr. Garth E. Under bridge access apparatus with cross-linking member connecting tower with vehicular chassis
US20070166144A1 (en) * 2003-12-05 2007-07-19 Charlie Hall Pipe-handling boom and method of use thereof
US7950095B2 (en) 2007-12-09 2011-05-31 Safe Rack Llc Gangway and method for manufacturing same
US20090144916A1 (en) * 2007-12-09 2009-06-11 Saferack, Llc A gangway and method for manufacturing same
US20110225794A1 (en) * 2007-12-09 2011-09-22 Safe Rack Llc Gangway and method for manufacturing same
US8869335B2 (en) 2007-12-09 2014-10-28 Safe Rack Llc Gangway and method for manufacturing same
WO2009076311A1 (en) * 2007-12-09 2009-06-18 Saferack, Llc A gangway and method for manufacturing same
US20100031455A1 (en) * 2008-08-10 2010-02-11 Honeycutt Robert W Fall Restraint Equipment Component and Method for Manufacturing the Same
US20100032633A1 (en) * 2008-08-10 2010-02-11 Saferack, Llc Fall restraint equipment components and method for manufacturing the same
US20100031456A1 (en) * 2008-08-10 2010-02-11 Honeycutt Robert W Fall restraint equipment component and method for manufacturing the same
US8261393B2 (en) 2008-08-10 2012-09-11 Saferack, Llc Fall restraint equipment component and method for manufacturing the same
US8341821B2 (en) 2008-08-10 2013-01-01 Saferack, Llc Fall restraint equipment components and method for manufacturing the same
US8782838B2 (en) 2008-08-10 2014-07-22 Safe Rack, Llc Fall restraint equipment component and method for manufacturing the same
US9556625B2 (en) 2011-03-08 2017-01-31 Jerzy Meldner Suspended scaffolding system
US11028602B2 (en) * 2011-03-08 2021-06-08 Jerzy J. MELDNER Suspended scaffolding system
US20130313044A1 (en) * 2012-05-25 2013-11-28 J. Aubrey Stewart Extension boom apparatus
US20160177584A1 (en) * 2013-08-06 2016-06-23 Fast Beam Oy Scaffold
US20170226756A1 (en) * 2014-08-06 2017-08-10 Fast Beam Oy Scaffold for supporting a working platform for bridges
US10662658B2 (en) * 2014-08-06 2020-05-26 Fast Beam Oy Scaffold for supporting a working platform for bridges
US20160214842A1 (en) * 2015-01-23 2016-07-28 Jeremy Herauf Unique roadworthy sidewalk boom trailer, having on-site interchangeable boom, on-site interchangeable ladder, and on-site interchangeable catwalk sized to access narrow openings and nooks over and under bridges
US9695024B2 (en) * 2015-01-23 2017-07-04 Jeremy Herauf Unique roadworthy sidewalk boom trailer, having on-site interchangeable boom, on-site interchangeable ladder, and on-site interchangeable catwalk sized to access narrow openings and nooks over and under bridges
JP2017115569A (ja) * 2015-12-17 2017-06-29 西尾レントオール株式会社 橋梁用吊足場及び橋梁用吊足場の設置方法
JP2018062807A (ja) * 2016-10-13 2018-04-19 株式会社高知丸高 高架構造物点検装置、高架構造物点検装置の設置方法及び高架構造物点検方法。
JP2018155060A (ja) * 2017-03-21 2018-10-04 米山工業株式会社 移動足場装置
JP2018155061A (ja) * 2017-03-21 2018-10-04 米山工業株式会社 移動足場装置
US11603302B2 (en) * 2017-07-12 2023-03-14 Nihon Bisoh Co., Ltd. Work gondola apparatus and work vehicle provided with same
CN108163781B (zh) * 2017-11-24 2019-09-27 中国船舶重工集团应急预警与救援装备股份有限公司 一种车载式快速安装救援电梯
CN108163781A (zh) * 2017-11-24 2018-06-15 湖北华舟重工应急装备股份有限公司 一种车载式快速安装救援电梯
US10287150B1 (en) * 2018-01-06 2019-05-14 Ford Miller Holding Company, LLC Mobile platform carrying system
US11591802B1 (en) 2020-02-28 2023-02-28 Material Control, Inc. Modular access system
CN111775851A (zh) * 2020-07-03 2020-10-16 山东交通学院 桥梁、隧道智能检测车机械臂系统

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YU266277A (en) 1982-06-30
FR2370148A1 (fr) 1978-06-02
ATA797577A (de) 1982-07-15
DE2759857C2 (de) 1983-10-06
ES464011A1 (es) 1978-07-16
IT1123032B (it) 1986-04-30
DE2749470B2 (de) 1981-04-09
AT370182B (de) 1983-03-10
DE2749470A1 (de) 1978-05-11
DE2749470C3 (de) 1982-02-11
CH617640A5 (it) 1980-06-13
FR2370148B1 (it) 1982-11-12
YU39558B (en) 1984-12-31

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